Ms Albu E Block Results The effect of leaf type on rate of leaf disk floats Spinach vs Asian Pear Hypothesis If oxygen is removed from the discs of spinach leaves and asian pear leaves then the spinach discs will photosynthesize at a faster rate than the asian pear discs will ID: 590535
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Photosynthesis Rate Results
Ms. AlbuE BlockSlide2
Results
- The effect of leaf type on rate of leaf disk floats (Spinach vs. Asian Pear)
Hypothesis: If oxygen is removed from the discs of spinach leaves and asian pear leaves, then the spinach discs will photosynthesize at a faster rate than the asian pear discs will.
Summary: According to the data, the rate of photosynthesis in floats per minute for spinach leaves is generally faster than the rate of photosynthesis for asian pear leaves, which proves our hypothesis correct. The discs float as they produce more oxygen from photosynthesis, which makes them more buoyant. The faster the rate of photosynthesis, the faster the leaves will produce oxygen and float.
by Louise, Brandon, and RachelSlide3
Since the spinach disks floated to the surface faster than the rhododendron disks, that means the spinach produced more oxygen in the given time, thus the spinach has a higher photosynthetic rate.
Conclusion
Zoe Cole, Amanda Johnson, Sarah Boughan, Vanessa PalermoSlide4
Apple Leaves
Photosynthetic Rate = Number of Floating Chads/ # of Minutes
Apple Leaves = 9 Chads / 7 minutes = 1.29 Chads / Minute
Spinach Leaves = 15 Chads / 3 minutes = 5.00 Chads / minuteSlide5
Photosynthetic Rate of Spinach vs. Arugula
Time (min)
Control (Spinach)
Experimental (Arugula)
0
1
5
1
1
6
2
3
6
3
11
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Abby Edison, Leah Calitri, Bridget Gomes, Caileigh Burke
We found that the spinach produced oxygen faster than the arugula. This results in the spinach “chads” rising to the top at a faster rate than the arugula. The spinach rose at a rate of .6 floats/min and the arugula rose at a rate of 2.8 floats/min. The spinach leaves are a darker green and therefore have a higher photosynthetic rate. Slide6
Photosynthetic Rate Lab
Ankit Thakur and David Ellis
Spinach Leaf
Black Cherry Leaf
Time (min)
Number of Spinach Floats
Number of Black Cherry Floats
0
0
0
1
0
0
2
4
3311742011Slide7
All About that Basil, no Spinach
By: Abby Mills, Claire Shea, Madhu Kaushik and Rebecca Arnold
Time
0 min
1 min
2 min
3 min
4 min
5 min
6 min
7 min
8 min
9 min
10 min
Spinach (disks)
00.00%00.00%00.00%00.00%3 15.79%5 26.32%1263.16%1684.21%1789.47%1894.74%19100.00%Basil* (disks)00.00%525.00%20100.00%--------Control Group:Spinach DisksExperimental Group:Basil Disks*Basil is out of four disks- data in proportion to twenty disksThe basil leaves undergo a higher speed of photosynthesis than the spinach leaves. This is because the basil disks began to float 3 minutes before the spinach disks. Also all of the basil disks floated 8 minutes before all the spinach disks.